The closing time for the primary damper can be set between 1-20 minutes. The closing time is set by adjusting the small black Allen screw – which is shown in the picture – by using a 2 mm Allen key. The factory closing time setting is approx. 6-8 minutes.

• Checking the factory setting (6-8 minutes)
  • Pull out the damper and clock the time it takes until the damper has closed itself again.
     
• Changing the factory setting
  • If a longer closing > 6-8 minutes is required, the Allen screw must be turned to the right.
  • If a shorter closing < 6-8 minutes is required, the Allen screw must be turned to the left.
  • Please note that the adjustable Allen screw is very sensitive and a change of just a few degrees will have a significant impact on the closing time. It might be necessary to make further adjustments in order to reach the optimal closing time.